Preparation of activated carbon from Enteromorpha prolifera and its use on cationic red X-GRL removal

被引:71
作者
Li, Yanhui [1 ,2 ]
Du, Qiuju [2 ]
Liu, Tonghao [2 ]
Qi, Yan [1 ]
Zhang, Pan [2 ]
Wang, Zonghua [2 ]
Xia, Yanzhi [2 ]
机构
[1] Qingdao Univ, Coll Electromech Engn, Qingdao 266071, Peoples R China
[2] Qingdao Univ, Lab Fiber Mat & Modern Text, Growing Base State Key Lab, Qingdao 266071, Peoples R China
基金
中国国家自然科学基金;
关键词
Activated carbon; Cationic red X-GRL; Adsorption; Isotherm; Kinetic; Thermodynamics; DILUTE AQUEOUS-SOLUTIONS; CATTLE-MANURE-COMPOST; BASIC DYE; MALACHITE GREEN; METHYLENE-BLUE; REACTIVE DYES; WASTE-WATER; METAL-IONS; ADSORPTION; EQUILIBRIUM;
D O I
10.1016/j.apsusc.2011.07.060
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Enteromorpha prolifera was pyrolyzed to prepare activated carbon using chemical activation by zinc chloride. The effect of activation parameters such as activation temperature, weight ratio ( Enteromorpha prolifera to ZnCl2), and activation time was investigated. The BET results showed that the surface area and pore volume of activated carbons were achieved as high as 1722 m(2)/g and 1.11 cm(3)/g, respectively, in the optimal activation conditions. Batch adsorption studies were carried out to study the adsorption properties of cationic red X-GRL onto activated carbon by varying the parameters like initial solution pH, contact time, and temperature. The kinetic studies showed that the adsorption data followed a pseudo second-order model. The isotherm analysis indicated that the adsorption data could be represented by the Langmuir isotherm model. The Langmuir monolayer adsorption capacity of cationic red X-GRL was estimated as 263.16 mg/g at pH 6.0. (C) 2011 Elsevier B.V. All rights reserved.
引用
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页码:10621 / 10627
页数:7
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